From the Syphus-Bunker Papers (MS-00169). The folder contains an original handwritten letter and a typed transcription of the same letter with copy of original letter attached.

From Union Pacific Railroad Collection (MS-00397). The scales are noted in the drawing. The bottom corner of the drawing states, "Union Pacific System L.A. & S.L.R.R. Co. Standard Coal House For Section Quarters. Type-A. Ass't Chief Engineer's Office, Los Angeles, Calif. Drawn By W.V.L-B. Traced By W.B.L-B. Checked By F.W.G. Date Nov 8, 1923. Scales As Noted. Revised Nov. 19, 1926. Drawing No. 15119".

Also written on the drawing: "Built at: Cima, Cal. 1925, Brant ' ', Hayden ' ', Moore ' ', Jean, Nev. '. To be built at Elora, Calif. 1926, Desert ' ', Roach, Nev, '. To be built at Las Vegas, Nev., Dry Lake ', Moapa ', Modena, Utah, Lund ', Milford ', Islen, Nev. 1928 [crossed out, Wann ' [crossed out]."